Step 1: Divide the number into separate digits:
14941 => 1 4 9 4 1
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
1 to 4 = 3
4 to 9 = 5
9 to 4 = 5
4 to 1 = 3
1 to 1 = 0
Step 3: Combine the filters to a string:
3 5 5 3 0 = 35530